Gas lamp or burner.



v No. 629,296.

\ II III! A. T. I. .wnnsou. GAS LAMP on BURNER.

(Application flied Mar. 18, 1888. Renewed June 23, 1899.)

Patented July i8, I899.

UNITED STATES P TENT" Orrice.

' ARTHUR THOMAS METCALF-JOHNSON, or oNDomnNc p.

cAs LAMP OR BURNER.

, SPECIFICATION forming part Of LettersPatent Nb. 629,296, dated 3'1113? 18, 189 9. Application filed March 13, 189 8 Renewed June 21 31899. Serial No. 721,626. (No model.)

To all whom it may concern:

Be it known that I, ARTHUR This invention relates to improvements in;

or connected with gas lamps or burners, and has for its object to obtaina circular or Argand flame and to conduct to the inner and outer wallsof the flame a supply of air in such manner that more perfectcombustion,

and therefore a more brilliant flame, will be I obtained without anyincrease in the consumption of gas.

In the accompanying drawings, Figure 1 is an elevation representing agas-burner constructed according to the present invention.-

Fig. 2 is a vertical section taken on" the line 1 1 of Fig.3. Fig. 3 isa plan thereof, but with the gallery removed. Fig. aiisasimilar view toFig. 3, but with the nipple of the burner removed. Fig. 5 is atransverse section taken on the line 2 2 of Fig. 2 and looking frombelow, and Fig. 6 is a similar 'view taken on the line?) 3 of Fig. 1. I

In the several figures like parts are indicated by similar letters ofreference.

it represents a cylindrical casing formed with several studs or rests a,constituting a seat for the chimney 0, while a gallery a is provided tosupport a-globe when desired;

The chimney o closely fits the outer wall of ton b the cylindricalcasing a, which between the studs or rests a is provided withcircumferential'slots (0* to admit a supply of air beneath the lower endof the chimney to the interior thereof and exterior of the burner.

The cylindrical casing a is fixed with a hollow stem or boss I), whichat its lower end is furnished with a threaded nipple b, adapted to screwinto any existing gas-fitting, and at its upper end is provided with adeflecting-but- Around the upper part of the stem or boss I) is arrangedan annular chamberib which is supported upon the upper ends of pipes orconduits b, with the bore of which it communicates, and the lower endsof the pipes I THOMAS JHET CALF JOHNSON, retired civil servant, a sub orcondults bfare fixed with the tubular stem 1) and communicate with thebore thereof.

The annular chamber b is formed with an enlargement and a seat at 12 andon this seat 1 b is dropped a hollow nipple 19, formed of steatite orother refractory materiahwhich'at its lower part is open to the chamber19 and at its upper part is formed with a ring of perforationsb throughwhich the gas issues, as is Well understood, while beneath the nipple band within the seat Z9 is arranged a gas distributer, consisting ofaring ofwire-gauze or perforated metal 33 or several of such rings mightbe employed, if desired.

The gas issuing from the perforations 19 when ignited forms an annularbelt of flame which creates a'rapid draft of air through the burner, andthese currents pass through the'length of the inclosed airway formed bythe cylinder Ct in the direction indicated by the arrows in Fig. 2, andthe air passing to the interior of the burner is by the button-- head 12caused to impinge upon the inner wall of the flame ator near the pointof ignition, while the air which passes outside the chamber Z2 isconducted in close contact with the outer wall of said flame, and thecurrents of air thus promote or induce rapid combustion.

By the means'hereinbefore described an Argand burner is rendered muchmore efficient and caused to give a brilliant, white, and steady lightwithout materially increasing the expenditureof gas and without hav= ingrecourse to incandescent mantles.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed,

I declare that what-I claimv is 1. In a gas-lamp, the combination of acylindrical casing formed with inner and outer walls against theinterior of the outer one of which closely fits the chimney, a seat forthe chimney located between the walls, slots in the outer wall of thecylindrical casing, a

central hollow stem'fixed within the. cylindrical casing and adapted tobe connected with the gas-supply pipe, an annular chamber formed with aseat to receive a nipple and supported by pipes or conduits from thehollow stem, a short distance from the cylindrical casing so as to leavea space between the parts, a nipple fitted to the seat, a wire gauzegas-distributer placed within the annular chamber, a deflecting-buttoncarried by the stem and a cylindrical chimney carried by the seat of thecylindrical casing, the parts being so arranged as to leavelengthenedairways up through the inside of the burner and around the outside ofthe annular chamber'and nipple, substantially as herein shown anddescribed and for the purpose stated.

2. In a gas-lamp, the combination with a hollow stem, adapted to connectwith a suitable gas --supply'pipe, an annular chamber connected to saidstem and terminating in a nipple for distributing the gas in cylindricalform, of a chimney-holder consisting of a cylindrical casing, andextending some distance below the nipple of the burner, and a chimneyclosely fitting the holder with airways through the cylindrical casingand between the chimney and the annular chamber and nipple,substantially as described-.'

3. In a gas-lamp, the combination of a cylindrical casing, formed withinner and outer walls, a seat for the chimney having airwaystherethrough and located between said walls, air-passages in the outerwall of the cylindrical casing, a hollow stem fixed within thecylindrical casing, and adapted to be connected to a gas-supply pipe,and an annular chamber connected to said casing and terminating in anipple for the discharge of the gas in cylindrical form, and conduitsconnectin g the chamber and easing, so as to leave a space between theparts, substantially as described.

ARTHUR THOMAS METOALF JOHNSON.

lVitnesSes:

GEO. S. VAUGHAN, F. B. MORRIS.

